Numbers 28:21 (KJV)

And in the fourteenth day of the first month is the passover of the LORD.

And in the fifteenth day of this month is the feast: seven days shall unleavened bread be eaten.

In the first day shall be an holy convocation; ye shall do no manner of servile work therein:

But ye shall offer a sacrifice made by fire for a burnt offering unto the LORD; two young bullocks, and one ram, and seven lambs of the first year: they shall be unto you without blemish:

And their meat offering shall be of flour mingled with oil: three tenth deals shall ye offer for a bullock, and two tenth deals for a ram;

And one goat for a sin offering, to make an atonement for you.

Ye shall offer these beside the burnt offering in the morning, which is for a continual burnt offering.

After this manner ye shall offer daily, throughout the seven days, the meat of the sacrifice made by fire, of a sweet savour unto the LORD: it shall be offered beside the continual burnt offering, and his drink offering.

And on the seventh day ye shall have an holy convocation; ye shall do no servile work.

Also in the day of the firstfruits, when ye bring a new meat offering unto the LORD, after your weeks be out, ye shall have an holy convocation; ye shall do no servile work: